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An uncatalyzed reaction has a rate of 4.2 x 10-7 sec-1. When an enzyme is added the rate is 3.2 x 104 sec-1. Calculate the rate enhancement caused by the enzyme.
A pitot-static tube is used to measure the velocity at the center of the pipe. If the fluid velocity is 10 ft/s, what is the deflection on a mercury manometer connected to the pitot-static tube
A wheel tractor-scraper is operating on a level grade, assuming no power derating is required for equipment conditions, altitude, and temperature.
a mountain water reservoir in a national park is to provide water at a flow rate of Q= 200 gpm and a minimum pressure of 40 psig in the lodge of the valley 200 ft below the reservoir.
A turbine operates at steady state with steam flowing through it at a rate of 36 kg/min. The steam enters the turbine at a temperature of 600C and a pressure of 8 MPa and exits at a pressure 90% lower with a quality of 70%.
an electrical-generation utility sometimes pump liquid water into an elevated reservoir during periods of low electrical consumption. this water is used to generate electricity during periods when the demand for electricity exceeds the utilities a..
Draw the influence line for the shear in panel CD of the girder. Determine the maximum negative live shear in panel CD due to a uniform live load of 500 lb/ft action on the top beams.
Statistics indicate that the world population since World War II has been growing at the rate of 1.9% per year. Further, United Nations records indicate that the world population in 1975 was (approximately) 4 billion.
You are planning a Polaris observation at latitude 42 degrees North when the star is at or near upper culmination. You want to know the error in azimuth that will result from a 1 min timing error.
A nylon thread is to be subjected to a 10-N tension. Knowing that E=3.2 GPa, that the maximum allowable normal stress is 40 MPA, and that the length of the thread must not increase by more than 1%
A pneumatic-tired tractor with a 354 - hp engine has a maximum speed of 3.6 mph in 1st gear. Determine the max. rimpull of the tractor in each gear if the engine effieicency is 91%.
determine the components of the 800 lb force f along the oblique axes a and b. also, determine the projections of f onto the a and b axes
The regulatory agency has told the company to maintain a salt level pf no greater then 250 mg/L downstream of the discharge. what should the removal efficiency. (percentage of the salt removed) of a process designed to remove salt from the waste w..
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